Letter-sheet and safety-envelop.



s. KOJIMA. V LETTER SHEET AND SAFETY ENVELOP.

APPLICATION FILED MAR-15, I9|6. I

Patented Oct. 31,1916.

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I v \Speciucat ion' of Letters latent. I Patented 31, 191 6;]

zApp licati on med March 15,.191e.i serial-no. 84,438.

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Be it .lmown thatl, SHIGEKI KoJIMA, a

'citizenof the Empire of "Japan, residing at; Independence, in the county of- Polk and State of Oregon, have invented certain new V and useful Improvements-in Letter-Sheets and Safety -Envelops, of which the follow- I ing is a specification, reference being hadto the accompanying drawings. 10'

This invention relates I to stationery, and

. particularly .to letter sheets which are adapted'tobe folded and sealedsothat the -ex 'terior of the sheet forms. an envelop.

. The general obj ect of .the. invention' is to provide a. very simple" and effective letter; sheet of this character which when folded is securely sealed andheld fromaccidental unfolding and in which the written matter contained on the inside or the sheet is se-jcurely sealed fiOIfi observation.

A'further object of the invention is the g provision of a letter sheet" of this character which maybe economically made, which is its inside face whereby bills or other-in closures may be attached to the letter sheet so that they cannot he accidentally detached therefrom when the letter is opened and thus the bill, check or othermatter be lost.

Other objects-willappe'arin the course of the following description. 7

My invent1on is illustrated in the accompanying drawings, wherein:

" 3 Figure 1 isan insideiface view ofia letter sheet constructed in accordance "with one form of my" invention; Fig. 2 is an inside face view of this same formbut with the lateral portions folded upon the main portion; Fig. 3 is a rear view of the completely folded letter sheet; Fig. 4 isa face view of another form of letter sheet; and Fig. 5 is a-view showing the same partly folded.

In Fig. 1 I show one form of my invention, and in some respects the simplest form. In this form, 10 designates the letter sheet as a. whole. This sheet'is rectangular in form and has a -lengthgreater than its width. The sheet is intended to be folded upon the lines,1l, and-the middle portion 12 of the sheet will be folded. upon the line 13.

' Coextensivewith the middlejportion 12 of tion of fia'p the the sheet is a sealing flap 1 4. At the-juncmiddle portion of.

thejsheetthere is a 'row of perforations 1 5, and the inneri-face- 'of the sealing flapiis coated with adhesive 16.: One'ach-sideof 'thevml ddle portion of the envelop are they lateral jflap's 17 3,116,118, each of which, is adapted to be'folded'at'itsmiddle upon the;

"line. 19, and the flap 17 at its margin isi formed with approximately parallel linesof -.perfora tions20 which extend inward froin [the ed e .fofthe flap. Preferably this line I a :of .pe' oratiohs is curved; asat 21, and then a extends straight inward. These" lines inf: perforations define aftonguei2 3; fUpon the inner face ofthe portion 17, though itmay be .applied'tothe opposite flap 18," is placed L a small portion of, adhesive," designated '22-, whereby a'bill, checkjo r other inclos'ure may I lie-attached by one cornerto onecorner of i the sheet so that when the sheet is opened the check-or bill will not fall out.

111 the use of this formof the invention the ,insideface of the letter sheetis written upon and then the sheet 17 isfolded over and then the sheet l8 folded over, with the tongue '23 defined between the lines of perforations 20 disposed over the edge'of the margin of the portion 18, as illustrated in Fig. 2.1 Then the folded 'sheet is again folded upon the lines I3 and 19- and the sealing flap lefolde'd over upon the" outside of the envelop and sealed. The envelopis addressed in the ordinary-manner. .When

it is desired to open the envelop, the sealing flap is torn across at the line of perforations whereupon the paper may be very readily unfolded; The tongue; 23, which overlaps the porti0n'18, however, resists the unfolding of the sheet, and the endsof this 7,

tongue 23 may be provided upon their innerfaces with adhesive 24 sothat the tongue 23 maybe sealed upon the outer face of the portion 18. When the envelop is sealed, as

before described, the written contents of the letter is entirely protected from observatlon and from moisture, accident or harm.

In Fig. 4, I show, another form of thi'sinvention which is in-manyfrespect similar to that heretofore described. In this form, the letter sheet 10 "is folded upon the lines 11 so as to provide a middle portion 13. A.

s ealing flap 14 is coextensive gwiththe middle portion 13 of the sheet. The middle portion of the sheet including the sealingfiap 14:, is tobe folded upon itself three times,'the folds being indicated by the lines 7 "12. Hence the sealing flap 14 is not folded lnner face with a small adhesive 16.

and 18 at its junction with the body of the sheet, but the edge of the sealingflap is formedv formed with the inwardly extending lines of perforations 20* so as to provide a tongue 23 correspondingto the tongue 23 previ ously descrlbed. One .corner of one of the side portions 17 or 18 is provided upon its spot of adhesive 22 whereby a bill or check may be-attached to the inner face of'the envelop.

In use, after the letter sheet is written upon the side portions 17* and 18 are folded over upon the body of the'sheet, the tongue 23 being disposed over the adjacent margin of the opposed side portion 18 in the manner illustrated in Fig. 5. The sheet is then folded upon the lines 12*" and 19 and the margin of the sealing flap-1 1 is caused to adhereto the body of the sheet. The laterally projecting sealing tabs are then folded over around the ends of the folded sheet and .7 asted down. The envelop is thenready for addressing.

This second form of the invention contains' all the advantages of the other form, and in addition has'the advantage of the ends 'of the combined letter sheet and envelop being sealed by means of sealing tabs,

thus preventing the f olded{letter from being expanded by pressing upon its top and bottom edges. This second construction is more particularly adapted for letter sheets of relatively heavyv material and of relatively large size, or lettersheets designed to contain relatively heavy inclosures. J

It will be seen that both forms of my in vention are adapted to be used in the form of tablets from which.the letter sheets may be taken as-they are needed. In both of securely sealed, can- 7 not readily be tampered'with, and mav be these forms the letter is readily folded andunfolded; It will also be seen that in both forms of my invention it is practically impossible to'unfold the sheet withouteither. tearing across the perforations of the sealilfg the sheet in the proper are coated with adhesive upon flap and thus unfold way, or else-so .dam-

age the sheet by attempting to unfold it fromthe inside that any one who received the letter would know that it had been ment of one side of the sheet with the tongue 23, the middle longitudinal fold of the sheet extending through to the middle of this tongue rendering it still more diflicult'to detach the edges of the sheets from each other so as to permit the from the inside.

Having described my invention,'what I claim is:

1. An envelop and letter sheet formed to.

' provide an integral front and back, a sealing flap attached to one edge of the front, and

side flaps integral with the back and front and disposed to project laterally beyond the ends of the sealing flap, the sheet being adapted to be folded parallel to the sealing fiapto form the back of the envelop, one of the side flaps on its margin having two lines of perforations e tending inward from the edge of the flap and defining a tongue adaptsheets to be unfolded.

opened and its contents read. -This isrendered particularly difficult by the engage ed to be disposed over the edge margin ofthe ppposite side flap when the envelop is folded, the tongue being so disposed that the transverse line upon which the back is'folded against thefront will extend through the tongue intermediate of the perforations defining it. I

2. An envelop and letter sheet formed to provide: an integral "front. and back, a sealing flap attached to one edge of the front,

and side'flaps integral with the back and front and disposed to projectlaterally beyond the ends of the sealing flap, the sheet being adapted to be folded parallel to the sealin flap to form theback of the envelop,

one othe side flaps on its margin having two lines of'perforations extending inward from the edgeof the flap and defining a tongue adapted to be disposed over the edge margin of theoppositeside flap when the envelop is folded, the tongue being so dis-' posed'that the transverse line upon which 'the back is folded against the front will experforations defining it, the inner surface of the tongue being coated with adhesive.

In testimony whereof I'hereunto-aflix my signature in the presence of two witnesses.

; SHIGrEKI ,KOJIM'A. r,

, 10b. tend through the tongueintermediate of the r 

